Hi,

I have a brand new Precision 5820 with a Cascade Lake CPU. I'm trying to install 4 identical 2933 MHz crucial RAM modules in it, 32GB each.

When I boot the system, I get a 2x amber + 4x white error code (Memory/Ram Failure).

All 4 modules work fine when installed by themselves in the slot marked DIMM 1. I can boot the system fine with three modules in slots DIMM1, DIMM2, and DIMM3. Not a supported configuration, per the manual, but it works.

However, once I add the 4th module to slot DIMM4, I get the error code.

Any ideas?